Clinical details are collected routinely as part of the medical care and clinical follow up record on patients with prostate cancer and these include disease parameters (e.g. stage, grade) and treatment outcome (e.g. survival data, side effects of treatment). We will also request follow-up data, approximately 2 years after the patient has consented, to record any relapse, treatment and survival data that has occurred since diagnosis. We will link the genetic findings with these clinical data to try to identify genetic markers of disease parameters (e.g. those which predict for poorer prognosis or worse late toxicity from treatments such as radiotherapy). These data would be analysed anonymously after linking the clinical and genetic datasets. No results would be feedback to participants. We will supply anonymised data from this to an EU dataset (Genepi study). This would only be to a central database managed under the auspices of GCP and would only be anonymised data. No individual would be identifiable to the holders of the Genepi database.